OpenEuphoria

Re: Proposal for 'math.e' (2007-08-23)

• Posted by Juergen Luethje <j.lue at g??.de> Aug 24, 2007
• 698 views

Pete Lomax wrote:

> Derek Parnell wrote:
> > 
> > CChris wrote:
> > > I have a data series which decreases, then increases, then decreases even
> > > more,
> > > then increases less than before and so on. Think of global winter and
> > > summer
> > > rainfall over the long run, for instance.
> > > Then I'm interested not only in the absolute maximum (which start=1 will
> > > return),
> > > but also the local maxima further down the road, for which I must filter
> > > the
> > > first points in the series.
> > 
> > Got it. You have a set of data which contains various intersecting and
> > non-intersecting
> > subsets. Such as annual rainfall which has various subsets for months,
> > seasons,
> > and ad hoc so one can ask questions such as ...
> > 
> >    highest rainfall for the year, for March, for Summer, since "that dust
> >    storm
> > back on July 17th", etc ...
> 
> But how can you get the highest rainfall for 2006, or March, or Summer, via
> a max(list,start) function?
> 
> With max(list[i..j],1), that's how.
> 
> So it should be either max(list) or max(list,start,end).
> 
> Obviously this is a "whee I can write some code" moment, and no real thought
> has yet been put towards anybody actually finding the [] thing useful.

So do you think the 'start' parameter does make sense in the function
   find_max(sequence list, integer start)    ?

Regards,
   Juergen